TEL：+86-13567841157
+86-15771805138
+86-18958238181
E-mail：zhiye@zy-casting.com
ycn@zy-casting.com
santos@zy-casting.com
Website：www.zy-casting.com
Address: Xiachen Industrial Zone, ChunhuTown, Fenghua District, Ningbo CityZhejiang Province，China-315538
Process | Silica sol Casting (Green Wax) |
Mold | General Aluminum Mold & Steel Mold |
Mould Materia | Silica sol, Mullite Sand, Zircon Sand |
Mould Shell | Fireproof Coating |
Technology Characteristics | ISuitable for producing small parts. Better precision. Better surface roughness. Can large extent reduce machining. |
Tolerance Range | CT5 to CT6 |
Single Weight | 0.01kgs to 30kgs |
Surface Roughness | RA6.3 |
Casting Material Type | Carbon Steel, Alloy Steel, Stainless Steel, Ductile Iron. |
Common Material Specification | GB, ASTM,SAE,AISI,DIN,BS,JIS,NF,EN,AAR,ISO |
Product application field | Automobile, Engineering Machinery, Railway, Marine, AgriculturalMachinery, Mining and other industrial fields |
熔模精铸件常用的热处理类型有退火、正火、淬火、回火及人工时效几种。
①退火：是将硅溶胶精密铸造件加热到超过相变温度（即As线以上30~50℃），经保温后随炉冷却至650~600℃时，奥氏体已分解完毕，最后出炉冷却即可。
如果随炉冷至室温，不但影响生产率，而且因缓慢冷却会发展脆性，使工作韧性降低。
退火的目的是：消除铸造内应力，改善组织的均匀性；降低硬度，提高塑性，以利切削加工，此外退火还可消除魏氏组织以提高专业硅溶胶精密铸造件的力学性能。
②正火：正火实际上是退火的一个特例，其加热规范与退火大体相同。所不同的是，正火加热后是在空气中冷却。由于冷却速度较大，转变后珠光体组织也较细，故强度比退火要高，但塑性和韧性则稍低。
Contact information：+86-13567841157
+86-15771805138
E-mail：zhiye@zy-casting.com
ycn@zy-casting.com
Website：www.zy-casting.com
Address: Xiachen Industrial Zone, ChunhuTown, Fenghua District, Ningbo CityZhejiang Province，China-315538
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